=Copyrights.=--The Constitution gives Congress the power to promote the progress of science and useful arts by securing for limited times to authors and inventors the exclusive right to their respective writings and discoveries. The purpose of the copyright law is to protect authors from having their books and other writings republished without their permission, and hence to prevent the rewards of their talent and industry from being appropriated by others. In pursuance of this provision Congress has enacted legislation enumerating the productions for which copyrights may be granted, the conditions under which they may be secured, and the terms for which the protection shall last. The law provides that copyrights may be granted for books, musical compositions, maps, works of art, photographs, and even for unpublished works. In the case of published works two copies of the best edition must be deposited with the register of copyrights at Washington. The ordinary form of copyright notice is "Copyright, 19--, by A. B." The term of the copyright is twenty-eight years, but it may be renewed for another period of twenty-eight years. During the period of the copyright the author has the exclusive right to print, publish, and sell the article copyrighted, and in case of infringement he may have recourse to the federal courts for damages on account of the loss sustained. A copyright may be sold or otherwise transferred, but the fact must be recorded by the register of copyrights. _International Copyright._--Formerly the writings of an American author might be republished in a foreign country without his consent, and thus he had no protection outside of his own country. Accordingly, to secure protection to American authors against the republication of their works in foreign countries without their consent, Congress enacted laws in 1891 and 1909, looking toward the reciprocal protection of American and foreign authors against infringement of the rights of each in the country of the other. In pursuance of these acts a copyright will be granted to a foreign author protecting him against the republication of his works in the United States, provided the government of which he is a subject will grant similar protection to American authors. But in the case of foreign books published in the English language the book must be printed and bound in the United States in order to secure the benefits of copyright. International copyright treaties designed to secure protection of this sort have been entered into between the United States and a number of foreign countries.